The design for the C-note was revealed in 2010, but a production delay postponed its introduction into wallets, according to the Federal Reserve.

What’s new

New security features aim to make the $100 bill harder to counterfeit. They include:

Blue, 3-D security ribbon: Tilt the bill back and forth to see bells change to 100s, shifting from side to side or up and down depending on the way the bill moves.

Bell in the inkwell: The inkwell and bell look copper until the bill shifts, then appears green and makes the bell appear to appear and disappear.

More security features

Portrait watermark: A faint image of Benjamin Franklin shows up on the right of the portrait. It’s visible on both sides of the bill

Color-shifting 100: A 100 on the front of the bill shifts from copper to green

Raised printing: Franklin’s left shoulder feels rough to the touch

Gold 100: A large gold 100 appears on the back of the bill

Microprinting: The words “United States of America” appear on Franklin’s jacket collar, “USA 100” shows up around the portrait watermark and “One hundred USA” is near the golden quill.

What happens to the old bills?

The old bills don’t lose their value, but the Federal Reserve will only issue the newly designed bills when commercial banks, savings and loan or credit unions order $100 bills from the Federal Reserve.

People don’t have to trade in their old $100s because they remain legal tender. As old bills circulate, they’ll eventually get returned to the Federal Reserve and will be destroyed.

Benjamin Franklin’s last redesign was March 1996. It’s also the most widely circulated and most counterfeited denomination outside of the U.S., according to the Federal Reserve Board.